WIP: device tree MVP

dts/bindings/ps2/microchip,xec-ps2.yaml

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+# Copyright (c) 2019, Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+description: Microchip XEC PS/2 controller
+
+compatible: "microchip,xec-ps2"
+
+include: ps2.yaml
+
+properties:
+    reg:
+      required: true
+
+    interrupts:
+      required: true
+
+    girq:
+      type: int
+      required: true
+      description: GIRQ for this device
+
+    girq-bit:
+      type: int
+      required: true
+      description: Bit position in GIRQ for this device

dts/bindings/ps2/nuvoton,npcx-ps2-channel.yaml

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+# Copyright (c) 2021 Nuvoton Technology Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+description: Nuvoton, NPCX-PS/2 channel pads node
+
+compatible: "nuvoton,npcx-ps2-channel"
+
+include: base.yaml
+
+properties:
+    channel:
+        type: int
+        required: true
+        description: index of i2c channel
+
+    pinctrl-0:
+        type: phandles
+        required: true
+        description: configurations of pinmux controllers

dts/bindings/ps2/nuvoton,npcx-ps2-ctrl.yaml

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+# Copyright (c) 2021 Nuvoton Technology Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+description: Nuvoton, NPCX-PS/2 controller node
+
+compatible: "nuvoton,npcx-ps2-ctrl"
+
+include: base.yaml
+
+bus: ps2
+
+properties:
+    reg:
+      required: true
+
+    clocks:
+        required: true
+
+    interrupts:
+      required: true

dts/bindings/ps2/ps2.yaml

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+# Copyright (c) 2019, Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+# Common properties for PS/2 devices
+
+include: base.yaml
+
+bus: ps2
+
+properties:
+    "#address-cells":
+      type: int
+      required: true
+      const: 1
+    "#size-cells":
+      type: int
+      required: true
+      const: 0
+    label:
+      required: true